Zhang Siyao, Yan Lianshan, Ye Jia, et al. Study on CO-OFDM system performance improvement by SLM-Clipping[J]. 2013,(5):19-20. DOI: 10.13756/j.gtxyj.2013.05.004.
On the basis of analyzing the effects of the serial correlation among the subcarriers of the CO-OFDM system on its performances
this paper proposes a new approach
in which the SeLected Mapping(SLM)method and the clipping method are combined.This approach optimizes the subcarrier serial correlation and mitigates the Four-Wave Mixing(FWM)effects that are mainly dependent on the former
thus improving the system performance.Theoretical analysis and MATLAB simulation results show that compared with SLM and clipping methods
this approach improves the sensitivity by about 1.8 and 3.4 dB respectively at the BER of